WM_QUERYWINDOWPARAMS (in Circular Slider Controls) - Parameters

pwndparams (PWNDPARAMS)

Pointer to a WNDPARAMS window parameter structure.

This structure contains:

status (ULONG)

Window parameter selection.

Identifies the window parameters that are to be queried. Valid values for the slider control are:
WPM_TEXT

Window text.
WPM_CCHTEXT
Window text length.
The flags in the status field are unchanged by this processing.
length (ULONG)
Length of the window text.
text (PSZ)
Window text.
presparamslength (ULONG)
Length of presentation parameters.
presparams (PVOID)
Presentation parameters.
ctldatalength (ULONG)
Length of window class-specific data.
ctldata (PVOID)
Window class-specific data.

ulReserved (ULONG)

Reserved value, should be 0.

rc (BOOL)

Success indicator.

TRUE

Successful completion.
FALSE
Error occurred.

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